摘要
In this paper,we consider throughput maximization in cognitive radio systems with proper power control.In particular,we incorporate location-awareness into the power control design and maximize the average throughput of the cognitive system.As we shall show,the proposed approach effectively utilizes the“spatial opportunity”to maximize the system throughput,which clearly outperforms traditional power control methods.Further,the proposed approach still exhibits significant throughput gain even considering imperfect position information,with appropriate robust design modifications.
基金
This work was supported by the National Natural Science Foundation of China(Grant No.60832008)
National Natural Science Foundation of China/Research Grants Council of Hong Kong(No.N-HKUST622/06).
